Internal hole punching sample check
Rotary swaging product: Tip head Dia. 0.01mm
Rotary swarging slice sample: Iron layer of uniform thickness 0.05mm
To assure that you can receive each product in precise dimensions from us. We use automatic CNC lathes to process basic copper material and strict quality control system. The external dimensions tolerance can reach to 0.05mm.Professional manufacturer can processing a complex product into one same product.